Improved feed-motion in sewing-machines



v F. PALMER.

- Sewing Machine.

No. 9,556 Patented Jany 25, 1853.

u. FUERS. Washington. 0. c.

I UNITED STATES PATENT @EFICE.

FREEHAN PALMER, OF GONNEAUT, OHIO.

IMPROVED FEED-MOTION IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 9,556., dated January25, 1853.

To all whom, it may concern.-

Be it known that I, FREEMAN PALMER, of Conneaut, in the county ofAshtabula and State of Ohio, have invented a new and use fulSewing-Machine; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thisspecifieation, in which Figure 1 is a longitudinal and vertical see lionof the frame of the machine, cutting directly through the center andshowing the operative parts. Fig. 2 is a transverse and vertical sectioncutting through the frame and leaving the working part exposed. Fig. 3is a front elevation, showing the feed-wheel and apparatus governing itsmotion, and which are removed in Fig. 2. Fig. 4 is a top view of thatportion of the frame where the needle, &c., work. Fig. 5 is amodification of the large driving-wheel, the radial. dots, Figs. 5 and2, marking the turn. Fig. 6 shows the needle in detail.

' In Fig. 1, A A A is the frame of the ma chine, and (t a the standardon upper part of the frame.

1- is the ieediug-\\'heel, having the flange Z) upon its disk.

i is a shaft having arms 0 and x.

I) is the chamber in which the shuttle plays, driven by the carrier h.(This figure shows an end view of D, and 71, Fig. 2 a side view, andFig. 4 a top view, looking down.)

1*] is a bar or lever, the end of which, working in the eccentricchannel a n, Fig. 2, and having its fulcrum at 7?, same figure, movesthe carrier h and the shuttle g. I

j is a plate through which the needle it passes.

F is the large driving wheel, having an undulating periphery, n a,which, working between the frictionrollers m in upon the bent lever G G,which has its fulcrum at l, and be-,

ing connected by a circular tenon at 0 with the needle-h0lder H, (shownin Fig. 2,) gives the required perpendicular motion to the holder andneedle. The motion to lever G, eifected by the undulating form of theperiphery of the wheel F, may be as well accomplished by an undulatingor cam flange near the outer edge of the wheels disk, in which caselever G would be nearly or quite straight.

p is a thumb-screw, by which the needle 7a is attached to the holder H.

I is a movable bar pressed slightly down ward by spring s, having at thebottom a foot, 1-, on one side of the needle, and aroller, q, on theother, which, with the roller B, (having the cloth or substance to besewed between them,) act together as feed-rollers.

J is a thread-guide adjusted by thumbscrew t.

K is the spool, with the thread a passing through the guide J, thenthrough the upper eye of the needle 1*, thence to the lower eye, w,-Fig.2.

L L (see Fig. 2) are friction-rollers placed upon'the disk of thedriving-wheel F, which, striking the arm :0 of the shaft 0, raises thearm 0 on the other end'of that shaft, which, working in a slot of lever0, (see Fig. 3,) raises the same, carrying the feed-wheel B forward. Inthe same Fig. 3 is seen the feed-wheel B, with a flange, 1), upon itsdisk, and the cramp d, which grasps the flange b, but sliding freelyalong the same until acted on by the lever 0, when it instantly bindsfirmly upon the flange, so that the feed-wheel shall be carried forward,as before described, by the arm 0. f is a spring to keep the cramp d inits place. The forward motion of the feed-wheel, which gives the lengthof the stitch, is regulated at pleasure by the screw-regulator Y, (seeFig. 2,) which allows the arm :1 a longer or shorter range.

The needle 7;, Fig. '6, used in this (or any other) machine, has twoeyes, o and 10, which is an important device, the upper eye effectuallytaking up the slack of the thread and preventing it from catching underthe point of the needle.

The operation of this machine is simple, having neither cog-wheel norband about it. It is also rapid and certain. The power being applied bypulley and band ,or by hand applied to the handle M, turns the largedriving-wheel F. (Shown in Figs. 1, 2, and 5.) Its varying peripher i an is such that actin u on the lever G G communicates a perpendicularmotion to the holder and the needle. \Vhen the needle carrying a threadhas pierced the cloth to a proper depth, it is raised; but the clothholding the thread and preventing it from rising with the needle, itforms aloop in the shuttle chamber 1). At this instant the end of thebar E is acted upon by the eccentric channel 12 n, Fig. 2, which quicklythrows the shuttle with the thread which it carries, through the loop,when the needle, rising still higher, draws tight the thread which hadpreviously formed the loop. In the meantime the shuttle returns and oneof the friction-rollers L L, Fig. 2, strikes the arm .90 of the shaft 0,and, acting upon the feed-wheel B, as before shown, carries it, with thematerial being sewed, far enough forward for another stitch, whichcompletes the operation.

